Drafting tablet



:I ,5 V j s 7 Sept 1931 s. A. sTRzELczYK 1,821,485

DRAFTING' TABLET Filed July 9, R328 lllillllllll patented Sept. 193iUnire sfr.

SAMUEL A. sTRzELczYmor MILWAUKEE', wisconsin DRAFTING TABLET Applicationfiled July 9,

This invention relates to drafting tablets. Objects of this inventionare to provide a novel form of drafting table, whichl is so constructedthat a. plurality of straight edges, or rulers, are provided which areadapted to be moved either longitudinally of the tablet, or transverselythereof,.an d which are provided with graduations so that the utmostspeed and ease may be obtained in laying out sketches or other drawings.

Further objects are to provide a novel form of drafting tablet, in whichthe paper is fed from a roll carried in a housing adjacentv the upperend of the tablet, and the paper passes '15 below stationary guides andmay be withdrawn from the bottom of the table and torn off against thelowest stationary guide.

Further objects are to provide a drafting s table which is of extremelysimple construction, which may be readily produced, and

which is practical in operation.

An embodiment of the invention is shown in the accompanying drawings, inwhich:

Figure 1 is a plan view of the tablet with portions broken away.

Figure 2 is a longitudinal sectional view on the line 2-2 of Figure 1. Y

Figure 3 is a transverse sectional view on the line 3 3 of Figure 1.

Referring to the drawings, it will be seen that the tablet is composedot' a base plate 1, which has projecting marginal flanges 2 (see FigureAt the lower end of the tablet a transverse, stationary guide 3 isprovided and has its ends bent over the marginal flanges 2, one of theends being indicated by reference character 4. It will be seen that thisstationary guide has a portion which passes over the projectingedge ofthe marginal flange inset within the said fiange, as indicated byreference character 5. This is to prevent the fixed guide 3 fromslipping. The guide is graduated, as indicated.

A similar upper fixed guide 6 is also prod vided adjacent the upper endof the tablet. Between these guides a slidable rule 7, also providedwith graduations, is provided and has its ends turned over and `guidedby the guides 3 and 6, as most clearly shown in Figure 2. It is apparentthat this rule may be 192s. semi- 116.291,455.

set at any desired distance from the margins 'of the paper sheetl, whichis carried beneath the giiides'3 and 6. urther, anypdesired ver# ticalmeasurement lmay be laid off along the rule 7 and acorresponding linedrawn. Fur- 55 ther than this, a slidable, transverse rule 8 is providedand has its ends folded over the. marginal flanges'2 of the'baseplate,.as indicated in igure 3. y This horizontal rule may be slid toany'position and the appropriate 66 distance laid o5 and the lines drawnas required in the sketch.

The papersheet 16 is fed from roll 16,. f This roll is carried by acentral rod 9 which l is journaled in the vertical plates 10 and 11. 65The vertical plate 10 has its bottom edge flanged and bent over themarginal guide k2, asl indicated in Figure 1j by the reference character12. The vertical plate is integral with the horizontal plate or Vcover13 which 70 yextends across the top 'of the roll and is provided withakeyhole type Vof slot 14 adjacent its free end. This keyhole type ofVslot receives the hook-like endl projecting upwardly from the verticalplate 11. The ver-Y tical plate is similarly provided with a portionflanged over the appropriate marginal edge 2 in a manner identicallysimilar to that previously described. y

Thus, when it is desired to renew the roll, all that is necessary istospring the hook-like end 15 inwardly into the enlargement of thekeyhole lslot 14C, and thereafter swing the cover upwardly to ya slightdistance. The end plates 10 and 11 may be sprung apart suf- 85 fcientlyto allow the removal of the used roll and the replacement of a new roll.

It will be seen that a very compact, selfcontained, and simple type ofdrafting tablet is providedvby this invention. y It will be 'seen gffurther that the tablet may be vvery readily used tolay out sketches,plans, or any other drawing required, and that the measurements arecarried by the sliding rules which are for the horizontal and verticallines, and also are .95 carried by the rstationary upper and lowerguides. Thus the utmost ease in sketching and drawing is afforded bythis tablet.

Although the invention has been described in considerable detail, suchdescription is iii-1 1 G is provided by this invention.

tended as illustrative rather than limiting as the invention may bevariously embodied and as the scope of such invention is to bedetermined as claimed.

The paper sheet 16 is fed from roll 16. This roll is carried by acentral rod 9 which is journaled in the vertical plates 10 and 11. Thevertical platev 10 has its bottom edge flanged and bent over themarginal guide 2, as indicated in Figure 1 by the reference character12. The verticalv plate is integral With the horizontal plate or cover13 which extends across the top of the roll and is provided with akeyhole type of slot 14 adjacent its free end. This keyhole type of slotreceives the hook-like end 15 projecting upwardly from the verticalplate 11. The vertical plate is similarly provided with a portionflanged over the appropriate marginal edge 2 in a manner identicallysimilar to that previously described.

Thus, when it is desired to renew the roll, all that is necessary is tospring the hook-like end 15 inwardly into the enlargement of the keyholeslot 14, and thereafter swing the cover upwardly to a slight distance.The end plates 10 and 1l may be sprung apart suficiently to allow theremoval of the used roll and the replacement of a new roll.

If desired a cutout 17 `may be made in the bottom edge of the base plateso that the paper may be easily grasped in withdrawing it.

It will be seen that a very compact, selfcontained, and simple type ofdrafting tablet It will be vseen further that the tablet may be veryreadily used to lay out sketches, plans or any other drawing required,and that the measurements are carried by the sliding rules which are forthe horizontal and vertical lines, and

also are carried by the stationary upper and lower guides. Thus theutmost ease in sketching` and drawing is afforded by this tablet.

Although the invention hasbeen described i in considerable detail, suchdescription is intended as illustrative rather than limiting as theinvention may be variously embodied and as the scope of such inventionis to be determined as claimed.

I claim 'A drafting tablet comprising a base plate having laterallyprojecting marginal flanges along its longitudinal edges, a pair ofspaced graduated guides having their ends folded over the said flangeswith a portion thereof set into said flanges, said guides being spacedupwardly a slight distance from the base plate to receive a sheet ofpaper between the guides and the base plate, a transverse graduated rulemounted upon the base plate between the spaced guides and having itsends slidably engaged with the marginal flanges of the base, and alongitudinally extending graduated rule mounted upon the base with itsends slidably engaging the spaced guides and traversing the transversegraduatel rule whereby the longitudinal graduated rule may be moved overthe plate and cooperate with the graduated guides vas well as thetransverse rule, the baise plate having a notch at one end thereofextending beneath one of the spaced guides whereby a sheet of paper beneath the guide may be engaged by the operator to'move the same beneaththe guide.

A In testimony that I claim the foregoing I have hereunto set my hand atMilwaukee, in the county of Milwaukee and State of Wis consm.

SAMUEL A. STRZELCZYK.

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